// A3.cpp - convert vector of strings to vector of doubles

#pragma warning(disable : 4786)
#include <vector>
#include <string>
#include <iostream>
#include <sstream>
using namespace std;

////// start of required answer /////////////////////

vector<double> convert(const vector<string> &vs) {
  double d;
  vector<double> returnVec;
  vector<string>::const_iterator it;
  for(it = vs.begin(); it != vs.end(); it++) {
    istringstream temp(*it);
    temp >> d;
    if(temp.eof() || temp.good())
      returnVec.push_back(d);
  }
  return returnVec;
}
////// end of required answer ///////////////////////

void useConvert(const string array[], int size) {
  vector<string> in(array,array+size); vector<string>::iterator inIt;
  cout << "\nInput Strings:";
  for(inIt = in.begin(); inIt != in.end(); inIt++)
    cout << "\n  " << *inIt;
  vector<double> out = convert(in); vector<double>::iterator outIt;
  cout << "\nOutput doubles:";
  for(outIt = out.begin(); outIt != out.end(); outIt++)
    cout << "\n  " << *outIt;
  cout << "\n\n";
}

void main() {
  const string array[] 
    = { "3.1415927", "-765", "17.5yyy", "[]{}()", "-3.33E-33" };
  int size = sizeof(array)/sizeof(string);
  useConvert(array, size);
  
  const string array2[] = { "xyz", "ABC", "()_+" };
  size = sizeof(array2)/sizeof(string);
  useConvert(array2, size);
}